Concepts of Programming Languages (11th Edition)
11th Edition
ISBN: 9780133943023
Author: Robert W. Sebesta
Publisher: PEARSON
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Chapter 4, Problem 3PS
Explanation of Solution
Trace of the recursive descent parser for the string:
STEP-1:
Next token is: 11 Next lexeme is a
Enter
Enter
Enter <factor>
STEP-2:
Next token is: 21 Next lexeme is +
Exit
Exit
STEP-3:
Next token is: 11 Next lexeme is b
Enter
Enter
STEP-4:
Next token is: 23 Next lexeme is x
Exit
STEP-5:
Next token is: 11 Next lexeme is c
Enter
STEP-6:
Next token is -1: Next lexeme is EOF
Exit
Exit
Exit
Extended Backus-Naur Form (EBNF):
BNF is a natural notation for describing syntax described by John Backus and Peter Naur. By extending it, we had EBNF which only enhances the readability and writability of BNF
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Students have asked these similar questions
Give a recursive definition for the set of all strings of a’s and b’s where all the strings are of odd lengths. (Assume, S is set of all strings of a’s and b’s where all the strings are of odd lengths. Then S = { a, b, aaa, aba, aab, abb, baa, bba, bab, bbb, aaaaa, ... )
Implement in Scheme using map and foldl. DO NOT use recursive definition for this problem.
Define a function lstOR, which takes a list of Booleans and returns #f if and only if all of the Booleans are false. For your convenience, (lstOR 0 ()) is defined as #f. For example,
(lstOR '(#t #f)) ; returns #t
(lstOR '(#f #f)) ; returns #f
(lstOR '()) ; returns #f
Find closed form representation for recursively defined function:
T(n) = 7, when n = 1
T(n) = 5T(n/4) + n^2, when n > 1.
Explore power of two. Find closed form representation in the form where T(n) = A*n^B + C*n^D.
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Chapter 4 Solutions
Concepts of Programming Languages (11th Edition)
Ch. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - Prob. 16RQCh. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - Prob. 20RQCh. 4 - Prob. 21RQCh. 4 - Prob. 22RQCh. 4 - Prob. 23RQCh. 4 - What was Knuths insight in developing the LR...Ch. 4 - Prob. 25RQCh. 4 - Prob. 26RQCh. 4 - Is left recursion a problem for LR parsers?Ch. 4 - Prob. 1PSCh. 4 - Prob. 2PSCh. 4 - Prob. 3PSCh. 4 - Prob. 4PSCh. 4 - Prob. 7PSCh. 4 - Prob. 8PS
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